Math 221 discussion Study guides, Class notes & Summaries

Suggestions: Narrated PowerPoint, recorded video (.mp4), VoiceThread, Screencast-O-Matic (.mp4), or a similar tool of your choice. Video can be recorded directly within a post as well, but make sure to plan out in advance what you are going to say/show. There should be a visual component as well as audio, so if you are using a webcam for the video that only shows you speaking, please attach your PowerPoint slide(s) (or screenshot images of them) to the post as well so everyone can see them. ...

MATH 221 Week 4 Discussion Post #3

Look online and find an article published within the past 4 weeks that includes a reference to probabilities, means, or standard deviations. These articles might be discussing weather events, investing outcomes, or sports performance, among many other possible topics. Your first post should include a summary of the article and what numbers you are highlighting from that article. Also include a link to the actual article. In your replies to other students, describe specific decisions that the...

Ethics: Find an example of a conditional probability in the news. Was the occurrence of the first event reasonable? Why or whynot?

Describing Residuals: Describe from the textbook as listed in graphics- what does it mean, if anything if residuals are small?

A random sample of 100 medical school applicants at a university has a mean total score of 502 on the MCAT. According to a report, the mean total score for the school’s applicants is more than 499. Assume the population standard deviation is 10.6. At α = 0.01, is there enough evidence to support the report’s claim? (Source: Association of American Medical Colleges)

There are 10 M & M’s of which are green in a bowl. You select 2 of them and putting each back in the bowl after it is selected. Is this a binominal experiment? Why? Or Why not?

Joseph and Kandy when we develop a confidence interval (CI) we are computing a rangeofvalues that’s likely to include a population value with a certain degree of confidence. It isan interval that tells us that the population means lies between an upper and lowerinterval.What are commonly used confidence intervals? (Responses to the questionabove)

MATH 221 Week 1 Discussion: Descriptive Statistics If you were given a large data set, such as the sales over the last year of our top 100 customers, what might you … able to do with these data? What might be the benefits of describing the data? Alternative: Look for examples of descriptive statistics in the news or on websites. Then post a link to that publication or site, note the statistic … and determine if it was an appropriate use of that statistic.

MATH 221 Week 1 Discussion; Descriptive Statistics